NOTICE TO EXCHANGES. 
The attention of learned societies and other institutions 
which exchange scientific publications with the University of 
Kansas is called to the list of publications of this University on 
the third page of the cover of this issue. 
Those marked “Supply exhausted” cannot be furnished at 
all; those marked “Supply small” cannot be furnished sepa- 
tately; those marked “Supply large” will gladly be furnished 
to any of our exchanges who may need them to complete their 
files. ; 
Back numbers of the Kansas University Quarterly and Geo- 
logical Survey, as far as possible, will be sent to those of our 
newer correspondents who are able and willing to reciprocate. 
ANNOUNCEMENT. 
The Kansas University Science Bulletin (continuation of 
the Kansas University Quarterly) is issued in parts at irregu- 
lar intervals. One volume, containing from 300 to 400 pages of 
teading-matter, with necessary illustrations, is issued each year. 
The subscription price is $3 per volume. Exchanges with other 
institutions and learned societies everywhere are solicited. All 
exchanges should be addressed to the LiBRARY OF THE UNIVER- 
sity OF Kansas. 
All communications should be addressed to 
Tue Kansas UNiveRsiTy Scimnck BULLETIN, 
LAWRENCE, KAN. 
EDITORIAL BOARD. 
W. C. STEVENS. C. E. McCLUNG, Managing Editor. 
F. E. KESTER. E. H. S. BAILEY. 
U. G. MITCHELL, Exchange Editor. 
